Stamp-stem guide



(No Model.)

T. PILKINGTON.

STAMP STEM GUIDE. Y l

Patented Dec. 19, 1893.

Wnsss;

UNITED STATES PATENT Ormes,i

THOMAS PILKINGTON, OF SAN FRANCISCO, CALIFORNIA.

STAM P-STENI GUIDE.

SPEGIFICATION forming part of Letters Patent 510,990, datedDecember 19, 1893.

Application filed I une 8. 1893. Serial No. 476,989. (No model.)

ro the method of constructing and applying the same.

My invention relates to stamp batteries for crushing ore or other mineral substances, and to the supports for guiding and' sustaining r the stems to which the stamp heads are attached, and consists in a separable bearing, preferably of wood, supported in a box or frame of metal, and held by means of a fol lower wedge and screw, so arranged that the zo parts are easily separable, and cannot be disarranged or disconnected by the jar and concussion of the falling stamps. My method of constructing these improved guides or bearings for stamp stems is showniu the accomz 5 panying drawings, in which- Figure lis an elevation in perspective of a complete guide made according to my invention. Fig. 2 is a longitudinal section on the line ai of Fig. l. Fig. 3 is a transverse section on the line y y of Fig. 2.

Similar letters of reference are employed to designate like parts throughout the dierent figures.

The main memberA is made of metal with iianges B B and boltways C to be fastened to a crossbeam of the stamp frame in the usual manner. The bearing or guide shells E E2 are preferably made of wood, in two parte as shown, and wide enough to 'tit between the 4o sides or anges D D of the main member A.

On the outer edge of these flanges D are wedge formed flanges F F, oblique on their inner faces to receive a tapering follower or wedge G, which bears against the flanges F and the outer half lll2 of the guide shells, as shown in the dierent figures of the drawings. This follower or wedge G is forced in and held in place by an eyebolt H attached to the lugs J .I by a pin I, and passes through a bridge 5o or arch piece L, that has its bearings on the sides of the main box or frame A, as seen in Fig. l. Below this bridge I preferably place .an elastic collar M, so as to neutralize the concussion of the stamps and consequent loosening of the nut N, also outside this nut and through the end of the bolt H, I insert a cross pin O, to guard against the nut falling off in case it is loosened by the jar of the falling stamps.

To hold the bearing shells E E2 longitudinally, I form rectangular ledges P P on the inside of the flanges D D, extending wholly across the rear half shell E', and partially across the front shell E2, fitting into correspending grooves formed in the sides of these shells. When the follower Gis removed, the outer shell E2 can be drawn forward until it passes or clearsthe ends of the ledges l? l? at R R and then can be removed endwisefrom the main body A. The rear shell can also be removed in vthe same manner by moving the stamp stem forward, so these shells or bearings E E2 can be removed, or replaced in a few minutes time without interfering with,

or disturbing the main parts of the device.

The jar and concussion to which the guides or bearings of stamp stems are subjected, re-

quires that no part shall be liable to give way or come loose, also that the bearing shells,

which wear rapidly, should be quickly adjusted or replaced, and it is to the attainment of these objects my invention is directed.

Having thus explained the nature and objects of my invention, also the method ofconstructing and applying the same, what I claim as new, and desire to secure by Letters Pat- Y.

ent, is-

1. In astamp stem guide, a main supporting plate having side plates or ilanges provided with wedge formed iianges on their inner opposing faces, the bearing shells located between the side plates and the wedging follower which presses the shells against the main plate, together with a device for forcing the wedge into place, substantially as described.

2. In a stamp stem guide, a main supporting plate, having side plates or tlanges,-provided with wedge formed flanges on their inner opposing faces, the bearing shells located between the side plates, the wedging follower which presses the shells against the main plate, a device for forcing the wedge into place and ledges on the side Bauges fitting into corresponding grooves across the bearing shells to prevent end movement of the latter when in place, substantially as described.

are fitted; a tapering follower or wedge, and 4wedgeformedflangeson the side plates against which the wedge bears; a screw-bolt to force in `and retain the follower or wedge, and a removable bridge piece through which the screwbolt passes that will swing out of the Way and permit the removal of the follower or wedge without removing the lscrew-nut, in the manner substantially as described.

` 5. 'In a stamp-stein guide, as herein described, the combination of a main inelosmg body or frame with flanges and boltways .for attachment to the stamp framing, bearing shells fitting therein, and held longitudinally by ledges, and a cross groove in the sides of the shells as shown; a follower or wedge f1tting against oblique ledges on the sides of the main body; a bolt and loose bridge piece, as shown, to force in and hold the follower, the bolt hinged so the bridge piece will swlng clear of the sides when the screw is loosened, in the manner substantially as described.

In testimony whereof I have hereunto affixed mysignatnre in the presence of two witnesses.

THOMAS PILKINGTON.

Witnesses:

ALFRED A. rENQUIscr, WILSON D. BENT, J r. 

